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Publisher's Summary

Why do smart people make irrational decisions every day? The answers will surprise you.

Predictably Irrational is an intriguing, witty and utterly original look at why we all make illogical decisions. Why can a 50p aspirin do what a 5p aspirin can't? If an item is free, it must be a bargain, right? Why is everything relative, even when it shouldn't be? How do our expectations influence our actual opinions and decisions?

In this astounding audiobook, behavioural economist Dan Ariely cuts to the heart of our strange behaviour, demonstrating how irrationality often supplants rational thought and that the reason for this is embedded in the very structure of our minds.

Predicatably Irrational brilliantly blends everyday experiences with a series of illuminating and often surprising experiments that will change your understanding of human behaviour. And by recognising these patterns, Ariely shows, we can make better decisions in business, in matters of collective welfare and in our everyday lives, from drinking coffee to losing weight, buying a car to choosing a romantic partner.

PLEASE NOTE: When you purchase this title, the accompanying reference material will be available in your Library section along with the audio on our desktop site.

©2008 Dan Ariely (P)2016 HarperCollins Publishers Ltd

Critic Reviews

"A marvelous book that is both thought provoking and highly entertaining, ranging from the power of placebos to the pleasures of Pepsi. Ariely unmasks the subtle but powerful tricks that our minds play on us, and shows us how we can prevent being fooled." (Jerome Groopman, New York Times best-selling author of How Doctors Think)
" Predictably Irrational is wildly original. It shows why - much more often than we usually care to admit - humans make foolish, and sometimes disastrous, mistakes. Ariely not only gives us a great read; he also makes us much wiser." (George Akerlof, Nobel Laureate in Economics, 2001 Koshland Professor of Economics, University of California at Berkeley)
"Dan Ariely is one of the most original and consistently interesting social scientists I know. His research covers an unusually broad range of topics, and in every one of them he has produced some distinctive findings and ideas. His methodological inventiveness is remarkable." (Daniel Kahneman, Nobel Prize in Economics, 2002)

What listeners say about Predictably Irrational

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Awesome book

This is an amazing book on behavioural economics. It really questions some of the core tenets of economics theory. A must read for people who spend a lot of time in work where understanding other people is key to your success.

To truly appreciate this book I had to make a document on things I learnt from this book

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start to end - intriguing

One of the best books I have ever read on behavioral economics. It is gripping and keeps you interested throughout.

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awesome book

highly recommended book for everyone. very interesting and engaging book. well thought and written, kudos to author...

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Best read about understanding irrationality

I think as a business read this is one of the best reads available to study consumer's irrationality and it's predictibility. I recommend this book to marketers who are working on consumer behavior and related business solutions.

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Obvious truths that will blow you away!

You will learn so much about yourself and the basic human nature after reading this.


I was a firm believer that most Humans are rational. That view of mine changed over the last couple of years. This book just further accelerated that process. We are not really rational. We are mostly governed by emotions. Like Jefferson said,"Reason is the servant of passions."

It is surprising how often we deceive ourselves without even realising it. We think we are acting rationally, but when as a matter of fact we aren't. Dan will change your views about how humans make their decisions based on a number of wonderful experiments. Give it a read.

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motivating to start a businness

loved it. worthwhile reading even the subtle context of the book Predictably Irrational. Really helpful to see such books on audible.

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Intriguing Ideas

Very well narrated, never got bored listening to it. It's so well narrated that you will be engaged till the end. Gives a perspective on everything about how humans behave and foundation of the behavioural economics. A must listen to everyone who wants to understand ourselves one step further.

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  • Anonymous User
  • 13-12-20

Great insight

Absolutely loved this book. Makes you think and evaluate your own understanding of yourself and human behaviour.

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    3 out of 5 stars
  • Gaurav Nigam
  • 23-04-20

Three out of five.

The author in the first 3 chapters details the irrational behaviour that we himans display and also provides good pra focal implementable solutions for us. However in the later chapters the focus is more on the experiments conducted ro prove the irrationality of behaviour and less on providing actionable solutions.

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  • Anonymous User
  • 08-02-20

Fascinating and thoughtful

The book provides several examples of situations we experience in our daily lives, the decisions we make and why we make them. One area is product pricing and comparisons. We don’t have a way to measure in absolute terms so we compare, and we compare with what is easier to compare. This can sway someone’s decision to buy one or another product. Learning about our built-in biases can help us make better decisions.

Dan is an enthusiast on behavioral economics and definitely invites the readers to think and apply the concepts he shares.

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  • Justus
  • 17-01-20

Great narration and interesting studies

The narration was really excellent and made the humor in the book really come across. Also enjoyed that many of the studies in this book were actually undertaken by the author and shows his curiosity with the subject.

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  • B. Hotting
  • 12-01-20

nice reed but hate the background music

I liked the book its quite interesting.

On a more general lever I don’t like it when there is music in the background.
In this audiobook its not a lot but still if I want music I’ll play my own and for me its only annoying and not helping in any way.
Please don’t put background music in audio books!

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  • Carlos
  • 05-11-19

interesting listen on the topic of decision making

easy listen. great explanations on the experiments and results, based on the human behaviours and the way we make descisions

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  • Amazon Customer
  • 18-04-19

Couldnt stop

The book is just addictive. Well read, interesting, funny and serious in the perfect balance. Highly recomended

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  • moeketsi motjope
  • 13-11-18

Very engaging

It is very engaging. The social experiments done are very interesting, especially because they involve our day-to-day activities and behaviour.

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  • Andrew Riungu
  • 31-07-18

A fascinating and exciting read...simplistic

I really loved this book..it offered string insight into clearly understanding how BE can be applied and a guide to helping us deal with our irrationality effectively

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  • Nikolina
  • 21-06-18

Great book

Maby too much recurrence of conclusions, but overall, the book is interesting, narrator is great

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  • Andy
  • 25-05-20

Rethink every day decisions

Not a story book but an insight into your own thought processes.
The chapters are clear and themed with multiple examples from scientific studies for each point. A few possible study flaws, but given the benefit of the doubt that there isn't excitement in full methodology.
Will listen again after I add some vinegar to my beer.

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  • John H.
  • 22-02-21

Fascinating insight

A well written and beautifully read explanation of how our behaviour often fails our expectations

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  • Leonardo
  • 22-01-21

insightful book and entertaining narration

insightful book and entertaining narration. compared to other books based on academic research, I found it well flowing, also thanks to the empirical natural of the experiments quoted.

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  • Nicholas Luder
  • 30-11-20

Really? Wow

Very enjoyable, I've studied behavioural economics but still get shocked by its results. Simon Jones ' voice is always a pleasure to listen to.

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  • love to cook
  • 04-10-20

interesting and amusing

I found the book very interesting. It gives oversight in to the things we all do. The reader conveyed the irony and humour nicely. Well read indeed.

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  • Charlie Gillespie
  • 11-09-20

Another great book

I've read a few books by this guy now. He never disappoints. Very interesting indeed

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  • Rebecca H.
  • 09-09-20

Fabulous!

This is an absolutely Amazing book, and very much a must read for everyone everywhere!

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  • Anonymous User
  • 19-08-20

Practical, down to earth

The urge to understand human nature, rigorous experiments, faith there's hope - not an economics book, but a practical book to understand human behaviour.

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  • Anonymous User
  • 25-06-20

loved it

I loved this book, brilliant insight into our brains and useable practical steps to makes us less irrational.

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  • Mal De-Morgan
  • 10-06-20

My favourite book on the subject thus far

Loved this, well written and spoken.
Great examples and amazing findings which spark ideas and thoughts into my work and life.
If you love understanding human behaviour you will love this!

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  • Amy Docker
  • 29-08-20

political rubbish

I thought the book was trying too hard to push feminism, anti-masculine and socialist ideology.

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  • Paul Davies
  • 24-04-19

Easy takeaways

Many books on similar topics get too academic and tend to lose the casual listener by complicating the narrative.

I really appreciate how Dan used common speech to describe and provided regular conclusions.

Enjoyable read with entertaining stories.

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  • Anand Balasubramanian
  • 07-03-19

Engaging read!

some very interesting insights into human behavior and goes a long way to explain some of the irrational decisions we commonly make. good read, worth the time